10122311111 has 4 divisors (see below), whose sum is σ = 11042521224. Its totient is φ = 9202101000.

The previous prime is 10122311081. The next prime is 10122311113. The reversal of 10122311111 is 11111322101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10122311111 - 2¹⁰ = 10122310087 is a prime.

It is a super-2 number, since 2×10122311111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122311113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460105040 + ... + 460105061.

It is an arithmetic number, because the mean of its divisors is an integer number (2760630306).

Almost surely, 2^10122311111 is an apocalyptic number.

10122311111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10122311111 is a deficient number, since it is larger than the sum of its proper divisors (920210113).

10122311111 is an equidigital number, since it uses as much as digits as its factorization.

10122311111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920210112.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 10122311111 its reverse (11111322101), we get a palindrome (21233633212).

The spelling of 10122311111 in words is "ten billion, one hundred twenty-two million, three hundred eleven thousand, one hundred eleven".